The area postrema, and the anatomy of an unwanted effect
Delayed gastric emptying is a mechanism that becomes an adverse effect above a threshold. It is not a complication in the ordinary sense.
Nausea
Page 2 of 5 of this archive, newest first.
The incidence tables, read line by line
Almost every figure in circulation about tolerability comes from six publications. This is what they say.
Delayed emptying explains some of this, and not all of it
The receptor populations that produce satiety and the ones that produce nausea overlap substantially. That is why the ceiling of this drug class is where it is, and it is…
Severity grading, and the gap between a grade and an experience
Severity in these tables is graded by interference with activity, not by how unpleasant the experience was. Those are different measurements.
Background rates, and why they matter for attribution
Pancreatitis is rare, was adjudicated in the outcome programmes, and did not show the imbalance early case reports suggested.
The interventions with trial support, and the much longer list without
Dietary measures are widely recommended, plausible on mechanism, and supported mainly by observational data and clinical experience.
Discontinuation rates, read honestly
The ceiling varies severalfold between people, and nothing measurable at baseline predicts where it sits.
Pancreatitis, obstruction, gallbladder: three things nausea can be
Rapid weight loss by any means raises gallstone risk. Separating that from a direct drug effect requires a comparator, and the trials have one.
What the trials counted as intolerance
Trial discontinuation figures are a floor, not an estimate: trial populations are supported in ways ordinary patients are not.
The tolerability data everybody quotes and nobody reads
Severity in these tables is graded by interference with activity, not by how unpleasant the experience was. Those are different measurements.
Antiemetics, laxatives and the thin literature underneath them
Constipation is the most tractable of the effects and the most consistently under-managed.
Retained gastric contents, and how a small finding became a large argument
A drug that delays gastric emptying complicates the assumption behind every fasting instruction in perioperative medicine. The professional bodies have moved twice on this…
When to stop escalating and when to stop entirely
The ceiling varies severalfold between people, and nothing measurable at baseline predicts where it sits.
The mechanism behind the mechanism
The clinical effect profile is almost fully predictable from where the receptor is expressed, which is unusual and useful.
Gallstones during rapid weight loss: drug, or weight loss?
The features that should prompt urgent assessment, stated once and plainly.
Delayed emptying explains some of this, and not all of it
The receptor populations that produce satiety and the ones that produce nausea overlap substantially. That is why the ceiling of this drug class is where it is, and it is…
The mechanism behind the mechanism
Delayed gastric emptying is a mechanism that becomes an adverse effect above a threshold. It is not a complication in the ordinary sense.
Pancreatitis, obstruction, gallbladder: three things nausea can be
A small number of serious gastrointestinal events occur in people taking these drugs. Distinguishing them from the expected effect profile is the most consequential…
The interventions with trial support, and the much longer list without
We separate what is supported, what is reasonable, and what is folklore, and we do not pretend the boundaries are crisp.
Gallstones during rapid weight loss: drug, or weight loss?
The features that should prompt urgent assessment, stated once and plainly.